And specific properties for several kinds of lead - free solder are analogized.
分析了几类正在实用化的无铅焊料特性.
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DC coefficients were analogized after DCT transformation, and they were considered to be appropriate embedded places.
首先分析DCT变换后直流系数的特点并确定嵌入位置,然后提出一类根据水印信息量化DCT直流 系数嵌入水印的算法.
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